var landcoverLayer = new ol.layer.Tile({
    id: 'landcover',
    title: 'Landcover 2010',
    visible: false,
    legendPath:'nepal:Landcover',
    source: new ol.source.TileWMS({
        url: 'http://db2map.gistemp.com/geoserver/gwc/service/wms',
        hidpi: false,
        params: { 'VERSION': '1.1.1', 'LAYERS': 'nepal:Landcover' },
        serverType: 'geoserver'

    })
});